Home / 77,668,771.72-107,185,479.30-42,388,508.68

Finding the Fourth Proportional to 77,668,771.72, 107,185,479.30 and 42,388,508.68

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Solution

The fourth proportional to 77,668,771.72, 107,185,479.30 and 42,388,508.68 is: 58,497,546.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,668,771.72 : 107,185,479.30 = 42,388,508.68 : x
  2. Step 2: Convert to fraction form
    77,668,771.72/107,185,479.30 = 42,388,508.68/x
  3. Step 3: Cross multiply
    77,668,771.72x = 107,185,479.30 × 42,388,508.68
  4. Step 4: Simplify right side
    77,668,771.72x = 4,543,432,619,678,010
  5. Step 5: Solve for x
    x = 4,543,432,619,678,010/77,668,771.72
  6. Step 6: Final answer
    x = 58,497,546.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.